1. Johns Hopkins Medical Institutions, Gastroenterology and Hepatology, Baltimore, Maryland, United States
2. Showa University Northern Yokohama Hospital, Digestive Disease Center, Yokohama, Japan
3. Northwestern University Feinberg School of Medicine, Department of Surgery, Chicago, Illinois, United States
4. NorthShore University Health Systems, NorthShore Center for Simulation and Innovation, Evanston, Illinois, United States
5. Winthrop University Hospital, Gastroenterology and Hepatology, Mineola, New York, United States
6. Fukuoka University Faculty of Medicine, Gastroenterology and Hepatology, Fukuoka, Japan
7. Aarhus University Hospital, Department of Surgery, Aarhus, Denmark
8. Institute of Digestive Disease, Gastroenterology and Hepatology, Shatin, Hong Kong